Window blind



Dec. 5, 1939. M. R. APP 2,181,897

WINDOW BLIND Filed 0ot.28, 1938 .eofzJf 0 I6 ha 37 w'rmns ATTORNEYSPatented Dec. 5, 1939 UNITED STAT-:ss

PATENT ori-lcs amm . wnmow amm mum a. sa, vlniu, ou. Application octoberes. ma, serial No. esiste s einen.' (ci. iss- 11) This invention relatesto window blinds and has for an object to' provide 'a device of thischaracter which may be easily applied to window frames outside the sashfor preventing ingress of insects into the building and at the sametimedeilectingvthe suns rays from shining into the building so thatinsulation against the sun's heat through windows will be greatlypromoted.

A further object is to provide a device of this l character which willbe formed of a few strong simple and durable which may be inexpensivelymanufactured and which will not easily get out of order.

With the above and other objects in view the l invention consists ofcertain novel details of construction'and combinations of Dartshereinafter fully described and claimed, it being understood thatvarious modifications may be resorted to within the scope of theappended claims without departing from the spirit or sacriiicing any4 ofthe advantages of the invention.

In the accompanying drawing forming part of this specification,

. blind.

v ofthe arrowheads.

Figure 4 is a detail cross sectional view-showing the manner of tyingthe tapes to theslats. Referring now to the drawing in which likecharacters of reference designate similar parts in the various views,designates the frame and Il the wire mesh screen of s conventionalwindow screen which may be attached to the outside of the window frameor may be applied tothe win dow frame underneath an upper sash as iseustomary in the use of window screens.

` In carrying out the invention the window screen imtldescribed isprovided, as a unitary structure therewith, with a plurality ofllporllosed slats Il formed of any desired material .and suspended in apredetermined angular position irom the top cross member I3 of the frameIO through the medium oi' spaced tapes Il which are looped overrespective end portions of theslats in the same manner as in theconstruction of venetian'blinds. and aresecuredtothesiatsthroughthemediumof ioopedthreads il,therebelngapairofthesethreadsengagedaroundeachslatandpassed through ,the front and rearreaches of the respective tape, the indivldualthreads intersectingFigure l is a front elevation of the window a slat blind comprising arespectiveplate i6 which is secured to the top cross member I3 throughthe Imedium of nails or other connectors. One reach of eachI tape is ofgreater length than the other reach so that the angular inclination ofthe slats to the horizontal is permanent. The degree of slant isdetermined by the amount of each reach engaged aroundthe respectiveplate it before it is secured in place. vPreferably the slope is suchthat the suns rays will be deilected so as not to enter the roomdirectly and thus insulation from the suns heat will be greatlypromoted.

vertically disposed guide wires I8 are engaged through openings I!disposed near the ends o f the slats, the upper ends of these guidewires being secured to the top cross member I 3 of the frame through-themedium of stapes 20 or other suitable connectors.. The lower ends 'ofthe wires are trained through openings 2Min the lower-l `most slat andit will be pointed out that these openings are disposed closer togetherthan the openings of the other slats for a purpose to be described.v Theextreme lower endsof the guide wires are looped around bolts 22, bestshown in Figurez, which are passed upwardly through the bottom crossmember 23 of the frame, and thence looped back as shown at 26 to providea knot,

friction of the 'guide wires upon the walls of theopenings to insurethat the lslat blind will remain in any adjusted open positionlongitudinally of the guide wires.

yl'iortuliustingtheslatblindapairoi'cords 21 are downwardly throughopenings 28 in the slats and the lower ends knotted as shown at 2!underneath the bottom oi' the lowermost slat. The upper ends of thecords are trained horizontally through guide eyes Il secured to thevtop. cross member Il and from thence trained side by'side to aguide.eye 3| located on one longitudinal -member ofthe trame. thence carrieddownwardlyand knotted as shown at l! toa second pair of cords 83. A

' The secondpair' of cords 88 are trained downwardly from the knottedupper ends thereof along when the operatorfpulls down upon the cords 27and 33 the slats will be moved upwardly to adjust the slat blind to anydegree of closed position. Conversely when the operator pulls upwardlyon the cords 21 and 33 the slats will be moved downwardly to adjust theslat blind to any degree of open position from top to bottom of theframe I0.

Since the operation of the device has been described as the descriptionof the parts progressed it is thought the invention will be fullyunderstood without further explanation.

What is claimed is:

l. A window blind comprising a frame, a plurality of superposed slantedslats within the frame, limp tapes suspending the slats from the uppertransverse member of the frame, said slats having openings near theends, guide wires secured to the upper and lower transverse members ofthe frame and engaged through said openings, the openings. of thelowermost slat being closer together than the openings of the otherslats so that said guide wires are deformed when passing through theopenings of the lowermost slat to create friction for holding the slatsin adjusted positions, and cords connected to the slats for moving theslats on the guide wires in the nature of a Venetian blind.

2. A window blind comprising al frame, a plurality of superposed slantedslats withinthe frame, limp tapes suspending the slats from the uppertransverse member of the frame, said slats having openings near theends, guide wires engaged through said openings, the openings of thelowermost slai'l being closer together than the openings of theremaining slats, means for adjustably tensioning the guide wires tocreate frictional engagement therewith with the walls of/the closelyspaced openings of the lowermost ,slat for holding the slats in adjustedopen or from the upper transverse member of the frame;

each tape having th rear reach of greater length than the front reachfor maintaining a permanent predetermined slant of the slats, said slatshaving openings near the ends, guide wires engaged through saidopenings, the openings of the lowermost slat being closer together thanthe openings of the remaining slats, a bolt and nut connecting the lowerend of each respective guide wire to the lower cross member of theframe, adjusting of the nut on the bolt adjustably tensioning the guidewires to create frictional engagement therewith with the walls of theclosely spaced openings of the lowermost slat for holding the slats inadjusted open or closed positions, cords ,connected to the lowermostslat and slidably engaged with the remaining slats, guide eyes trainingthe cords transversely across the uppermost slat to one .longitudinalmember, said cords being thence trained downwardly on said longitudinalmember, cords connected to the lowermost slat, guide eyes training thesecond named cords along the lowermost member of the frame@- to saidlongitudinal member and thence upwardly i thereupon, and a knotconnecting both setsofv cords together, downward pull upon the knottedcords moving the slats to adjusted closed positions, upward pull uponthe knotted cords moving the slats to adjusted open positions.

MILTON R. KAPP.

